unquestionably
adv. 无可非议地；确凿地，肯定地
例句
It was unquestionably a step in the right direction.
这无疑是朝正确方向迈出的一步。
《牛津词典》
They have seen the change as unquestionably beneficial to the country.
他们认为这场变革对该国无疑是很有益的。
《柯林斯英汉双解大词典》
Now, this thing had actually and unquestionably failed.
现在，它实际上毫无疑问地失败了。
